Home / 72,391.07-108,709.92-47,133.60

Finding the Fourth Proportional to 72,391.07, 108,709.92 and 47,133.60

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Solution

The fourth proportional to 72,391.07, 108,709.92 and 47,133.60 is: 70,780.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,391.07 : 108,709.92 = 47,133.60 : x
  2. Step 2: Convert to fraction form
    72,391.07/108,709.92 = 47,133.60/x
  3. Step 3: Cross multiply
    72,391.07x = 108,709.92 × 47,133.60
  4. Step 4: Simplify right side
    72,391.07x = 5,123,889,885.31
  5. Step 5: Solve for x
    x = 5,123,889,885.31/72,391.07
  6. Step 6: Final answer
    x = 70,780.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.